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Re-establishment of the genus Pseudalbizzia (Leguminosae, Caesalpinioideae, mimosoid clade): the New World species formerly placed in Albizia

by: Aviles Peraza, Gabriela; Koenen, Erik J. M.; Riina, Ricarda; Hughes, Colin E.; Ringelberg, Jens J.; Carnevali Fernández-Concha, German; Ramírez Morillo, Ivón Mercedes; Can Itza, Lilia Lorena; Tamayo-Cen, Ivan; Ramírez Prado, Jorge Humberto; Cornejo, Xavier; Mattapha, Sawai; Duno de Stefano, Rodrigo

Publication date: 2022-8-22
Usage: Attribution 4.0 International
Topics: Arthrosamanea, hydrochory, monophyly, Neotropics, phylogeny, taxonomy
Publisher: Pensoft Publishers
Collection: biodiversity
Contributor: Pensoft Publishers
Language: English
Rights: https://biodiversitylibrary.org/permissions
Rights-holder: Copyright held by individual article author(s).
Volume: 205
Item Size: 39.4M

Abstract: Following recent mimosoid phylogenetic and phylogenomic studies demonstrating the non-monophyly of the genus Albizia, we present a new molecular phylogeny focused on the neotropical species in the genus, with much denser taxon sampling than previous studies. Our aims were to test the monophyly of the neotropical section Arthrosamanea, resolve species relationships, and gain insights into the evolution of fruit morphology. We perform a Bayesian phylogenetic analysis of sequences of nuclear internal and external transcribed spacer regions and trace the evolution of fruit dehiscence and lomentiform pods. Our results find further support for the non-monophyly of the genus Albizia, and confirm the previously proposed segregation of Hesperalbizia, Hydrochorea, Balizia and Pseudosamanea. All species that were sampled from section Arthrosamanea form a clade that is sister to a clade composed of Jupunba, Punjuba, Balizia and Hydrochorea. We find that lomentiform fruits are independently derived from indehiscent septate fruits in both Hydrochorea and section Arthrosamanea. Our results show that morphological adaptations to hydrochory, associated with shifts into seasonally flooded habitats, have occurred several times independently in different geographic areas and different lineages within the ingoid clade. This suggests that environmental conditions have likely played a key role in the evolution of fruit types in Albizia and related genera. We resurrect the name Pseudalbizzia to accommodate the species of section Arthrosamanea, except for two species that were not sampled here but have been shown in other studies to be more closely related to other ingoid genera and we restrict the name Albizia s.s. to the species from Africa, Madagascar, Asia, Australia, and the Pacific. Twenty-one new nomenclatural combinations in Pseudalbizzia are proposed, including 16 species and 5 infraspecific varietal names. In addition to the type species Pseudalbizzia berteroana, the genus has 17 species distributed across tropical regions of the Americas, including the Caribbean. Finally, a new infrageneric classification into five sections is proposed and a distribution map of the species of Pseudalbizzia is presented.
Addeddate: 2025-05-02 19:21:23
Bhl_virtual_titleid: 210913
Bhl_virtual_volume: v.205 (2022)
Call number: 10_3897_phytokeys_205_76821
Call-number: 10_3897_phytokeys_205_76821
Foldoutcount: 0
Genre: article
Identifier: reestablishment205avil
Identifier-ark: ark:/13960/s284wm06h21
Identifier-bib: 10_3897_phytokeys_205_76821
Identifier-doi: 10.3897/phytokeys.205.76821
Ocr: tesseract 5.3.0-6-g76ae
Ocr_detected_lang: en
Ocr_detected_lang_conf: 1.0000
Ocr_detected_script: Latin
Ocr_detected_script_conf: 1.0000
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Page_number_confidence: 80
Page_number_module_version: 1.0.5
Page_range: 371-400
Pages: 30
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Possible copyright status: In copyright. Digitized with the permission of the rights holder.
Ppi: 300
Source: PhytoKeys 205
Year: 2022